Asynchronous or synchronous operation of event signaller by even

Details Asynchronous or synchronous operation of event signaller by even Asynchronous or synchronous operation of event signaller by even

1991-08-12

1997-04-29

Black, Thomas G.

G06F 946

Patent

active

056258216

ABSTRACT:
A computer operating system manages events defined by an application program or another part of the operating system. Each event definition includes one or more attributes of the event which controls some operating system responses to an occurrence of the event. After an occurrence of a defined event, an application program or another part of the operating system signals an event manager. The event manager reads the corresponding event definition to determine a mode of operating the signaller of the event or a process associated with the event signaller. The operating modes include a synchronous mode whereby the event signaller or the associated process should suspend processing until the event is handled, and an asynchronous mode whereby the event signaller or associated processor can continue processing while the event is being handled. After reading the event definition, the event manager advises the event signaller whether to proceed synchronously or asynchonously. After the event is handled, a suspended event signaller is restarted. The event definition can be updated dynamically.

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